Solid-state drives are getting cheaper and cheaper, but why have mechanical hard drives, which have been crushed in all aspects of performance, never been eliminated?

The reasons are: 1. Mechanical hard drives still have some advantages. The storage capacity of mechanical hard drives far exceeds that of solid-state drives. The capacity of mechanical hard drives can reach several TB, while the capacity of solid-state drives usually ranges from several hundred GB to several GB. Between TB; 2. The cost of mechanical hard disk is relatively low. For those users who need large-capacity storage but have limited budget, mechanical hard disk is still a more economical and affordable choice; 3. It has advantages in some specific application scenarios. In some monitoring systems, a large amount of data needs to be written continuously. In this case, the writing speed of mechanical hard disk may be faster than that of solid state hard disk.

As a new type of storage device, the price of solid-state drive (SSD) has dropped significantly in the past few years. However, despite this, mechanical hard disks (HDD) still occupy a certain share of the market and have not been eliminated. This raises a question: Why haven’t SSDs, whose performance has been crushed in all aspects, completely replaced HDDs?

First, let’s take a look at the advantages of SSD. Compared with HDD, SSD has faster reading and writing speed, lower latency and higher data transfer rate. This makes SSDs more efficient at booting operating systems, loading applications, and transferring large amounts of data. In addition, SSD has lower power consumption and noise, higher shock resistance, and longer life. All these advantages make SSD the first choice for many users.

However, HDDs still have some advantages that allow them to still have a market in certain scenarios. First of all, the storage capacity of HDD far exceeds that of SSD. Currently, the capacity of HDDs can reach several terabytes, while the capacity of SSDs usually ranges from a few hundred GB to several terabytes. This allows HDDs to remain advantageous in applications that require large amounts of storage space, such as video editing, data backup, and storage servers.

Secondly, the cost of HDD is relatively low. Although SSD prices are falling, they are still more expensive than HDDs. HDDs remain a more affordable option for those who need large storage but have a limited budget. Additionally, since HDDs cost less, they are also easier to recover data from. When SSD fails, the cost of data recovery is usually higher, while HDD is relatively easy.

In addition, HDD has advantages in some specific application scenarios. For example, in some monitoring systems, a large amount of data needs to be written continuously. In this case, the writing speed of HDD may be faster than that of SSD. In addition, for some applications that require data storage for long periods of time, HDDs retain data longer because they do not rely on power supply to retain data.

Finally, HDD technology is still evolving. Although SSDs perform better, HDDs are still improving in their capacity and speed. For example, in recent years, the capacity of HDDs has continued to increase, while the transmission speed has also improved. This makes HDD still competitive in some aspects.

In general, although SSD completely crushes HDD in terms of performance, HDD still has advantages in some specific application scenarios. With the continuous development of technology and further decline in prices, SSD is expected to gradually replace HDD and become the mainstream storage device. However, it may take some time before HDDs are completely phased out.

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